San Leone Mine, Assemini, Cagliari Province, Sardinia, Italy - A classic from this mine. This specimen is composed by a cluster of lenticolar calcite crystals to 2.4 cm in size, partly covered by limonite ! There are a lot of crystals ! On the top there is a bright partly gemmy calcite of 1.4 cm wide ! nice specimen of 8.5 × 6.2 × 3 cm. Weight is 200 gr.

Iglesias, Carbonia-Iglesias Province, Sardinia, Italy - Sculptural group of copper-rich aragonite with the classic delicate blue color. The aggregate consists of several sprays of elongated calcite, usually diverging as either a papillon (bowtie) of arrange in a semiparallel, artichoke fashion, then locally covered by a number of curvy coralloid aragonite crystallized wires. Quite a sought-after classic from this prolific mining district, now long defunct. Overall size is 7.6 × 5.1 × 4.5 cm. Weight is 70 gr. Ex Lehmann (CH) collection. Original label pasted on the specimen.

Fengjiashan Mine, Daye Co., Hubei Province, China - Attractive pink crystallized in a site covering an area approximately 3.0 x 3.0 cm in size nice on the front side of a 5.0 x 5.0 x 4.0 cm crystallized calcite matrix. In good condition as seen with minimal micro-chipping, this is richly crystallized for the species. Brown micro hubeite present as well. Sits beautifully by itself for display, this upon a sawn base. Overall size is 5.0 x 5.0 x 4.0 cm. Weight is 88 gr

Kimbedi, Mindouli District, Pool Region, Congo (Republic) - Green crystals studded with small balls of yellow mimetite. There are several crystals of dioptase on this rock ! Their size is up to 0.9 cm ! Overall size is 6.5x3.5x2 cm. Weight is 50 gr

NChwaning II Mine, Kuruman, North Cape Province, South Africa - Very nice and rich specimen of calcite crystals ! The crystal on the back are light pink. In the average the calcites are up to 1 cm and they form nice clusters that emerge from the specimen. The whole specimen shows a very nice fluorescence under UV ! Overall size is 10x8x3 cm.  Weight is 225 gr.

Sweetwater  Mine, Missouri, USA - Colorless to very pale yellowish translucent semi-lustrous prismatic crystals of calcite to 3.7 cm in length set attractively over the top of a 9.5 x 5.5 x 5.0 cm pyrite, chalcopyrite, and dolomite crystal matrix. Very minimal micro-cleaving present, this is in very good condition and sits very nicely by itself for display.

Brushy Creek Mine, Viburnum Trend, Reynolds Co., Missouri, USA - Various yellowish translucent double terminated calcite crystal to 1. cm in length show upon a breccia matrix with crude iridescent purplish blue crystals of chalcopyrite to 0.3-0.4 cm. In very good condition as seen. Size: 13 x 7.5 x 2.0 cm.

Fletcher mine, Viburnum Trend, Reynolds Co., Missouri, USA - A classic calcite specimen from this locality. The calcite is biterminated and 2.8 cm in size and sits on a matrix formed by a rich coating of chalcopyrites and dolomite with siegenite ! Nice combination specimen of 3.5x3.5x3 cm

Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Very nice cluster of terminated calcite crystals on a coat of tiny dolomites and chalcopyrites. The calcite are all terminated and 2.5-3.5 cm in size. Overall size is 8x2.5x1.8 cm

Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Well shaped bi-terminated calcite crystal of 3.7 cm stands on this matrix coated by dolomite and chalcopyrite crystals. Nice rock of 8x3.7x1.8 cm